FRONT LAWNS ARE where homeowners tell the world who they are—a garden or a birdbath signifies nature-loving, a gnome or flamingo means whimsical, and a tall hedge says privacy, please.
When the lawn is in the Hamptons and the man in question is Barnes & Noble chairman Leonard Riggio, the message is clear: I collect. As he stands on a very green patch of grass, surrounded by a group of sculptures that would make major museums jealous, Riggio revels in what he and his wife of 37 years, Louise, have assembled. “This garden...